It's not a Generate Report. It's a Document field lookup from the DocumentLibrary table shoved into an ActionResult. That AR is then used as the attachment in the SendEmail action.
Here's the screen shot of the Retrieve Value From Table action immediately before the SendEmail action (see link in my previous post for that action's screenshot)
http://imgur.com/3uiVps0
Same screen works fine in Method October version but the Feb. version doesn't attach the doc to the email.